OSMIKON offers a research guide for digital materials from Eastern, Central Eastern, and Southern Europe.
The Central and Eastern European Online Library (CEEOL) allows a partially open access to PDF articles from 200+ humanities and social science journals, electronic books and re-digitized documents pertaining to Central, Eastern and South-Eastern European topics.
COBISS, i.e. Co-operative Online Bibliographic Systems and Services, is a system that represents the platform for the national library information systems in Slovenia, Serbia, Macedonia, Bosnia and Herzegovina, Montenegro, Bulgaria, Albania, and Kosovo.
HRČAK is the central portal of Croatian scientific journals.
Project 68, offered by the Institute for Contemporary History, which is part of the Academy of Sciences of the Czech Republic, is an online collection of primary and secondary sources (an extensive bibliography, photo and media archives, and a curated collection of historical documents) to commemorate the 40th anniversary of the Prague Spring.
DAIS, i.e. the Digital Archive of the Publications of the Serbian Academy of Sciences and Arts, is a digital repository that provides open access to the publications of the Serbian Academy of Sciences and Arts (SASA) and its institutes, as well as to other outputs of the research projects implemented in these institutions.
ՀԱՅԿԱԿԱՆ ՇԱՐՈՒՆԱԿԱԿԱՆ ՀՐԱՏԱՐԱԿՈՒԹՅՈՒՆՆԵՐԻ ՀԱՄԱՀԱՎԱՔ ԳՐԱՑՈՒՑԱԿ = Union Catalog of Armenian Continuing Resources.
In the digital library Iverieli, you can find digital versions of books, magazines, newspapers, sheet music, audio materials, photographs, and copies of rare books (in different formats: Abode PDF, JPEG, MPEG Audio) preserved in the National Parliamentary Library of Georgia, as well as dissertations and theses.
Merab Mamardashvili Digital Library contains digitalized works by famous authors of Georgian classical literature and full texts of the editions about civic education, economics, law, etc.